Data Translation DT9850 Series, User Manual, Page: 85 / 104

Calibration
85
Calibrating the Analog Output Subsystem
Once the DT9850 Series Calibration Utility is running and you have connected a precision
digital multimeter (DMM) to the module’s outputs, do the following to calibrate the analog
output subsystem:
1. If you have not already done so, select the name of the module to calibrate from the Board
drop-down list box. The utility lists only DT9850 Series modules.
2. Select one of the Output Range buttons: -10V to 10V (bipolar) or 0V to 10V (unipolar).
Note: If you are solely interested in using current output, calibrate the unipolar voltage
range.
3. Select DA channel 0 . (The list box reflects the number of channels available on the
module.)
4. Select the Offset calibration button.
5. Click the increment or decrement arrows in the adjustment box until the measured
voltage on the connected DMM is 0 V (within 0.0005 V).
6. Select the Gain Calibration button.
7. Click the increment or decrement arrows in the adjustment box until the measured
voltage on the connected DMM is 0 V (within 0.0005 V).
8. Select the next DA channel to calibrate.
9. Repeat steps 4 to 7 until all the DACs on the module are calibrated.
10. Click Done when you are finished calibrating the analog output circuitry.